Thanks Dave in TN,
No! They are not all Model of 1928A1, in fact, the first three are Models of 1921, made by Colt Patent fire arms and are all three digit serial numbers made in the very first weeks of 1921.
Furthermore, they are all "George G Rorke" guns and were part of the smuggled shipment to Ireland on the "MV Eastside" in 1921, later investigated by J.Edgar Hover in 1921, his first case.
They are the rarest of the production Colt Thompson and are refered to in Helmers book, "The gun that made the twenties roar" as "the Irish Sword"
"We are off to Dublin, in the green, in the green,
Where the helmets glisten in the sun,
Where the bayonets flash and the the rifle crash,
To the echo of a Thompson gun."
The next three are Models of 1928, both Savage and Auto ordance made
and the last two are an M1 Thompson by Savage arms and a M1A1 by Auto Ord.
As you might have gathered, my second interest is Thompsons.
They go very well with the Irish Navy Lugers of Sir Roger Casement, but ah! but that is another story!to be sure!to be sure.
Regards
Murray
And yes, they are fully operational but one would not fire them as one would not fire ones Borchardt.